A icyuma gipima fotoni igikoresho gihindura ibimenyetso by'urumuri mo ibimenyetso by'amashanyarazi. Muriicyuma gipima foto cya semiconductor, icyuma gitwara amafoto cyatewe n’impanuka y’amafoto cyinjira mu ruziga rwo hanze munsi y’umuvuduko wa bias ukoreshwa maze kigakora umuvuduko wa photocurrent upimika. Nubwo haba hari uburyo bwo gusubiza ibintu bwinshi, photodiode ya pin ishobora gukora gusa ebyiri z’ibice bibiri bya electron-hole, ari byo bikoresho bidafite inyungu imbere. Kugira ngo birusheho gusubiza ibintu neza,fotodiode y'inkangu(apd) irashobora gukoreshwa.
Ingaruka zo kongera ingufu za apd ku muyoboro w'amashanyarazi zishingiye ku ngaruka za ionization ku gukubitana. Mu bihe bimwe na bimwe, elektroni n'imyobo byihuta bishobora kubona ingufu zihagije zo guhurira n'umuyoboro w'amashanyarazi kugira ngo bikore ebyiri nshya za elektroni n'imyobo. Iyi nzira ni uruhererekane rw'ibikorwa, ku buryo ebyiri za elektroni n'imyobo zikomoka ku gukurura urumuri zishobora gukora umubare munini wa elektroni n'imyobo kandi zigakora umuyoboro munini wa elektroni. Kubwibyo, apd ifite ubushobozi bwo gusubiza neza no kwiyongera imbere, ibyo bikaba byongera ikigereranyo cy'urusaku rw'igikoresho. apd izakoreshwa cyane cyane muri sisitemu ndende cyangwa nto z'itumanaho rya fibre optique hamwe n'izindi mbogamizi ku mbaraga za optique zakirwa. Muri iki gihe, impuguke nyinshi z'ibikoresho optique zifite icyizere gikomeye ku mahirwe ya apd.
Rofea yakoze ku giti cyayo icyuma gipima urumuri (photodiode) gikozwe muri fotodiode n'icyuma gipima urusaku ruke, mu gihe itanga ibicuruzwa bitandukanye, ku bakoresha ubushakashatsi bwa siyansi. Itanga serivisi nziza yo guhindura ibicuruzwa, inkunga ya tekiniki na serivisi yoroshye nyuma yo kugurisha. Umurongo w'ibicuruzwa uriho ubu urimo: icyuma gipima urumuri (photodetector) gifite ubushobozi bwo kongera imbaraga, icyuma gipima urumuri (photodetector) gishobora guhindurwa,icyuma gipima foto cyihuta cyane, icyuma gipima isoko ry'urubura (APD), icyuma gipima ingano y'ibirinda, nibindi.
Ikiranga
Intera ya Spectral: 320-1000nm, 850-1650nm, 950-1650nm, 1100-1650nm, 1480-1620nm
Ubugari bwa 3dB bandwidth：200MHz-50GHz
Umusaruro wo guhuza fibre optique2.5Gbps
Ubwoko bwa modulator
3dBbandwidt：
200MHz, 1GHz, 10GHz, 20GHz, 50GHz
Porogaramu
Gupima pulse y'amajwi yihuta cyane
Itumanaho ryihuse cyane
Ihuriro rya mikoroonde
Sisitemu yo kumenya fibre optique ya Brillouin
Igihe cyo kohereza: Kamena-21-2023